102102020110221 has 16 divisors (see below), whose sum is σ = 139936641319104. Its totient is φ = 66170897270784.

The previous prime is 102102020110219. The next prime is 102102020110243. The reversal of 102102020110221 is 122011020201201.

It is not a de Polignac number, because 102102020110221 - 2¹ = 102102020110219 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102102020110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102020110121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398761011 + ... + 399016976.

It is an arithmetic number, because the mean of its divisors is an integer number (8746040082444).

Almost surely, 2^{102102020110221} is an apocalyptic number.

It is an amenable number.

102102020110221 is a deficient number, since it is larger than the sum of its proper divisors (37834621208883).

102102020110221 is a wasteful number, since it uses less digits than its factorization.

102102020110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797779180.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102102020110221 its reverse (122011020201201), we get a palindrome (224113040311422).

The spelling of 102102020110221 in words is "one hundred two trillion, one hundred two billion, twenty million, one hundred ten thousand, two hundred twenty-one".